Name __________________________ Date _________________
Class ___________
Rocks ■ Review and Reinforce
Igneous Rocks
Understanding Main Ideas
Fill in the blanks in the table below.
Origin of Igneous Rock
Resulting Texture
Slow cooling of magma far beneath Earth’s
surface
1.
Extremely rapid cooling of lava in which no
crystals form
2.
Rapid cooling of lava in which tiny crystals
form
3.
Answer the following questions on a separate sheet of paper.
4.
What is the most common extrusive rock? Where is it found?
5.
What is the most common intrusive rock? Where is it found?
6.
Explain how the silica content of molten material affects the color of igneous
rocks.
7.
What qualities of igneous rocks have long made them useful for tools and
building materials?
8.
Describe one use each for the igneous rocks granite, basalt, and pumice.
Building Vocabulary
Fill in the blank to complete each statement.
9. Igneous rock formed from lava that erupted onto Earth’s surface is called
___________________ rock.
10. Igneous rock formed from magma below Earth’s surface is called
___________________ rock.
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